Exercise device



FIG. 1 is a perspective view of an exercise device showing the new design;

FIG. 2 is a front elevational view of thereof;

FIG. 3 is rear elevational view thereof; and

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken line showing of portions of the exercise device form no part of the claim. 

CLAIM The ornamental design for an exercise device, as shown and described. 